Hi! I set 10 frame and 10 frame rate at the beginning. But I want to change to 30 frame and 30 frame rate. After that, all the animation frame I made still within 10 frames. How to scale them all at once the 30 frames?
The simple answer is that you can’t.
All you can do is move selected blocks of frames along the timeline to give you a keyframe followed by two held frames, then the next keyframe followed by two held frames etc.
There is no timescale interpolation/tweening.